LEGAL access to Regu-Mate and a heartening return to form means top mare Aloisia is likely to remain in NSW indefinitely.

Regu-Mate, a product containing altrenogest to stop fillies and mares coming into season, is banned in Victoria because it contains steroid traces but is permitted in NSW.

Ciaron Maher and David Eustace used Regu-Mate on Group 1-winning Aloisia last week before sending her to Sydney after indifferent runs in Melbourne.

The mare produced her best performance since her stellar three-year-old season by storming from last at the 800m to finish a narrow second to Sky Boy in the Group 2 Villiers (1600m) at Randwick.

The performance prompted the Maher-Eustace stable to call for “unification” of policy on altrenogest between Racing Victoria and Racing NSW.

“It just seems crazy that you can race in one state using it (altrenogest) and not the other,” Maher said.

“She’s a high quality mare.

“I wouldn’t be doing the right thing by my owners without using that treatment.

“Without it, we’ve found there is inconsistency (with fillies and mares).

“If you look at her runs in the spring, she ran the quickest sectionals of the day at Caulfield (when third in the Tristarc) and then came out at Flemington (in the Empire Rose) and didn’t perform.”

Maher, like Mick Price, believes there is a safety element — especially for barrier attendants — having to deal with mares in season.

“If you talks to the barrier attendants, the behaviour of mares has certainly deteriorated,” he said.

Racing Victoria warned against the use of products containing altrenogest after horses trained by Robbie Laing and Russell and Scott Cameron returned positive swabs to banned steroids.

The trainers escaped charge as RV recommended trainers instead use injectable progesterone instead of altrenogest.

Racing NSW has taken a contrasting position, introducing a local rule to deal with “inconsequential” traces of steroids trenbolone and trendione.

Eustace and Maher have nine temporary boxes at Rosehill and are keen to establish their presence in Sydney.